Disintegrating apparatus.



Jv K BUM. DISINTEGRATQHG APPARATUS. APPLICATION FILED MAR 9. 19:5.

Patented June 6, 1916.

LL" I? la 27 28 5 FIG. I

if 6% IN VEN TOR. WITNESSES: 04

ATTORNEY UNITED STATES PATENT OFFICE.

JOSEPH K. BLUM, OF NEW YORK, N. Y., ASSIGNOR '10 K.-B. PULVEBIZER COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

DISINTEGRATING APPARATUS.

Specification of Letters Patent.

Patented June 6, 1916.

To all whom it may concern:

Be it known that I, JOSEPH K. BLUM, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain ne and useful Improvements in Disintegrating A paratus, of which the following is a speci cation.

My invention relates to the construction of disintegrating apparatus in such a manner that the screens or grate bars, which are used for screening material passing through the machine, may be readily removed from the machine and replaced therein without disturbing the remainder of the mechanism. So far as I am aware it has been customary to construct disintegrators or pulverizers, particularly those of the type having a rotor mounted on a horizontal shaft and provided with beaters or hammers, in such a manner that it is necessary to remove the top of the casing of the machine and also the rotor and its shaft'in ordertto make" the screens or grate bars accessible for repair or replacement.

One main object of my invention is to construct a disintegrator or pulverizer in such a manner that the rotor and the upper portion of the casing need not be disturbed in removing or replacing any portion of the screen or grate bar element.

In the accompanying drawings, "which form a. part of this specification, Figure 1 is an elevation, partly in section, showing one form of apparatus embodying my invention. Fig. 2 is an elevation of the same machine looking toward the lefthand end of Fig. 1. Figs. 3 and 4 are perspective views of two forms of screen elements, and Fig. 5 is a similar view showing my invention as applied to a device using grate bars instead of a screen.

Referring to the drawings in detail, the numeral 1 designates the main shaft of a disintegrator u on which is mounted a rotor element 2, pre erably provided with a plurality of swinging hammers 3. The shaft 1 may be provided with a pulley 4 and is preferably 3ournaled in suitable bearings, not .--l1own, which are external to the casing of the machine. The particular construction of the rotor and the hammers forms no part of my present invention, being shown, described and claimed in my co-pending appllcation, Serial No. 874,172. It will be apparent that any desired and suitable form of rotor, or other pnlverizing means, may

be employed in place of that shown in the drawings.

The casing of the machine consists essentially of the lower section 5 and two upper sections 6 and 7. The upper sections are preferably held together by means of bolts 8 passing through the flanges 9, while the upper sections are secured to the lower section by means of bolts 10 passing through flanges 11. A hopper section 12 is placed adjacent to the section 7 to provide for feeding into the machine the material to be pulverized. The upper sections of the casing are preferably rpvided with a lining 13 and the lower sdbtion with a similar lining 14, in the well known and usual manner.

It will be understood that in the operation of the machine the main shaft is rotated at high speed in the-direction of the arrow in '1, while the material to be crushed or pulverized is fed into the hopper, entering the upper portion of the casing and being struck by the hammers, by which the material is crushed or pulverized, after which it falls into the lower section of the machine. Here it is necessary to provide some suitable means for screening the crushed material so that when it attains a suflicient degree of fineness it may pass through the bottom of the machine into a suitable bin provided for its reception. It is primarily to the design and construction of this screening means that my invention is directed. At the left of Fig. 1 I have shown a screening means like that illustrated in Fig. 3, consisting of a-pair of substantially triangular frames 15, which are connected by the bars 16, 17 and 18, preferably secured to the frames by having their ends turned at an angle and riveted to the frames, as shown in Fig. 1. The hypotenuse of each triangular frame is formed on a curve 19 and over it is placed a screen 20, which preferably has its edges turned over at 21 and 22 to rest upon the bars 16 and 17, respectively. This construction forms a unitary screen element, such as is shown in Fig. 3. This element may he slid into the opening formed in the side of the bottom section of the easing into the position shown in Fig. 1, just as a drawer is slid into a cabinet. It will, of course, be obvious that the word side is used in this specification and the appended claims merely as a,con-

at each side of the machine for supporting 24 of each of theframes 15, and the lower section of the casing and its lining are formed to act as a support for the portion 21 when the latter is in place, as illustrated in Figs. 1 and 2. The dotted lines at the left of Fig. 1 illustrate the position of the screen element when it is partially withdrawn from its place in the machine.

At the right of Fig. 1 I have shown a somewhat modified construction in which the screen element illustrated in Fig. 4 is used in place of the element shown in Fig. 3. In this case two angle irons 25, having vertical legs 26 and horiiontal legs 27 are formed into a frame by means of a crossbar 28 corresponding to the cross-bar 17 in the construction above described. To this frame may be secured in any suitable manner a screen member 29, consisting of a unitary metal casting provided with screen-- ing apertures, such as the slots 30. The surface of the member 29 is curved just as is the surface of the screen 20, so that when the screen element formed by the screen and the frame is in place in the machine, it is in close proximity to the peripheral line of. travel of the hammers, so that they sweep. over it with a slight, but uniform, clearance. Either type of .screen above described is locked in place by means of a removable cover plate 32, which is secured to the lower section of the casing by means of bolts 33 entering the holes 34. The plate is shown removed from the structure at the left of Fig. 1. It will be obvious that in actual use the same form of construction will ordinarily be utilized for the righthand section as for the lefthand section, and it will be apparent that Fig. 1 merely illustrates the interchangeability of the two forms of construction. When the cover plates are bolted in place as described, the abutting ends of the two screen elements met and the elements are firmly locked in lace so that there can be no movement. f repairs are necessary, or for any other reason, it is the bottom surface desired to remove or replace either of the screen elements, it is only necesary to remove the cover plate, retaining that element in place and then withdraw it in the manner shown by the dotted lines in Fig. 1. This is accomplished without any derangement of the other parts, thus avoiding the necessity for taking down the upper sections of the casing and removing the rotor with its hammers and shaft, which is a diflicult operation since thepe parts weigh many hundreds of pounds.

In Fig. 5 I have shown an alternative construction in which the types of screens illustrated in Figs. 3 and 4 are replaced by grate bars. In this form of my device, a pair of triangular frames 35 corresponding to the frames 15 are held together by a connecting bar 36, secured to them in any suitable manner. The lower ends of the frames carry and are connected by a rod 37 which is designed to retain in place the notched lower ends 38 of a plurality of grate bars 39, which have their upper surfaces formed on the same curve as that of the edge 40 of the side frames, which is like that of the edges 19. The upper ends of the frames 35 are notched at 41 and the upper ends of the grate bars carry similar alining notches, so that when these bars are assembled in position, with the notches in their lower ends slipped over the bar 37, a detachable bar 42 may be dropped into the alining notches in their upper ends and in the notches 41, thereby locking the grate bars in position within the frames 35. When the parts are thus assembled, the structure shown in Fig. 5 is formed, and this may be placed in thd machine in exactly the same manner as either of the two preceding types. If at any time one or more of the grate bars is injured, it is a simple matter to replace it by first removing the bar 42 and then withdrawing the damaged grate bar from the device. This, of course, is done after the entire screen element has been removed from the pulverizer.

While I have illustrated and described only certain specific embodiments of my invention, I appreciate that it is susceptible of wide a plication, be limite to the precise structure shown and described.

Having thus described my invention, I claim:

1. In a disintegrator, a casing, a disintegrating member mounted therein, said casing being provided with an aperture in its side, a screen element adapted to be inserted through said aperture into operative position beneath said member without interference with said member or said casing, and a cover plate for said aperture, removably secured to the casing and engaging the screen element for retaining the latter in place.

2. In a disintegrator, a casing, a disinteand I do not desire to I grating member mounted therein, said casing being provided with an aperture in its side,

a screen element adapted to be inserted means adapted for sliding engagement with a fixed part of the disintegrator and means for retaining said element in operative position. a

3. In a disintegrator, a casing, a disintegrating member mounted therein, said casing being provided with oppositely arranged apertures in opposite sides thereof, a pair of screen elements adapted to be inserted through said apertures into abutting operative position below said member and releasable means for locking said members against movement away from each other.

4. In a disintegrator, a casing, a disintegrating member mounted therein, said casing being provided with oppositely arranged apertures in opposite sides thereof, a pair of screen elements adapted to be inserted through said aperturesinto abutting operative position below said member and releasable means for locking said members against movement away from each other including cover plates for said apertures adapted to engage said elements.

5. In a disintegrator, a casing, a disintegrating member mounted therein, said casmg being provided with an aperture in its side, a screen element including a curved screen and a substantially horizontal base, said base being formed for sliding engagement with a fixed part of the dismtegrator and means for locking said element in place after sliding the same to operative position.

6. In a disintegrator, a casing, a disintegrating member mounted therein, said casing having an aperture in its side, a screen element including a substantially triangular frame, the base of said frame being formed for sliding engagement with a fixed part of said disintegrator and means for locking the frame in operative position.

7. In a disintegrator, a casing a disintegrating member mounted therein, said cas- 1ng having an aperture in its side, a screen element including a substantiall triangular frame adapted to be inserted t rough said aperture into operative position, a rail for supporting said frame and means for locking said frame in operative position on said rail.

JOS. K. BLUM. Witnesses:

' I F. SONNEK,

G. E. TERWILLIGER. 

